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On Local Stresses And Spring Constants Of Pipe-Nozzle Connection, Hson-Chih Sun

Dissertations

This thesis presents a comprehensive study of local stresses and spring coefficients of pipe with a nozzle connection, analyzed by the finite element method (FEM). Six types of loading are discussed: radial force, circumferential moment, longitudinal moment, circumferential shear force, longitudinal shear force, and torsional moment.

For the local stresses, the bending and membrane stress factors due to each of these loadings are presented in a series of plots with various gamma (piping radius/thick-ness) and beta (nozzle radius/pipe radius) values. These stress factors will readily replace those previously published in WRC No. 107. This work not only gives more accurate …

Integrated Component-Based Computer Design Modeling System : The Implications Of The Representation Of Control Parameters On The Design Process, Allen D. Jablonski

Theses

The design process is dependent on a clear order of integrating and managing all of the control parameters that impact on a building's design. All component elements of a building must be defined by their: Physical and functional relations; Quantitative and calculable properties; Component and/or system functions. This requires a means of representation to depict a model of a building that can be viewed and interpreted by a variety of interested parties. These parties need different types of representation to address their individual control parameters, as each component instance has specific implications on all of the control parameters.

Representations are …

Wideband Microstrip Antenna Optimization, Amer Muhammad Alsawadi

Theses

An annular ring patch microstrip antenna was investigated numerically from the bandwidth aspect for a satellite link application. The desired portable antenna should occupy the physical volume of a typical briefcase and operate in the 400-500 MHz band. Numerical optimization is carried out using a commercially available computer package (EM, by Sonnet Software Inc.). The parameters optimized include the substrate thickness, feed location along the annular patch antenna and its relative dimensions. The software package was numerically validated for the rectangular patch geometries reported in the open literature. Experimental verification of this work is left to be carried out in …

Biodegradation Of Hexachlorocyclohexane In Sand And Wastewater Using Immobilized Phanerochaete Chrysosporum, Ajaykumar C. Gami

Theses

The present study was carried out in order to assess the ability of Phanerochaete chysosporium to degrade lindane (hexachlorocyclohexane) in sand as well as in water. It was found that the fungus is immobilized on saw dust, it is able to degrade lindane in a packed-bed reactor configuration, with a first-order rate constant of 0.00066min^-1. The fungus is also able to degrade lindane in sand. As with the packed-bed reactor, a supplemental carbon source (glucose) is required. In this study it was found that a glucose concentration of 20 gm/kg of sand, and 40% w/w moisture content, give …

Simulation Based Modeling And Scheduling Of A Generalized Flow- Line, Srinivas Anne

Theses

Simulation is a state of art technique, widely used to analyze the behavior of complex and dynamic real time systems. This study consists of two parts. The first part involves in the development of a simulation model of a real time flow line, used to assemble Printed Circuit Boards. The desired performance measures of the system, like, utilization, starving, blocking, failure and maintenance are recorded. The model developed can be used as a test pad to analyze scheduling rules and heuristics. This is illustrated in the second part of the study which consists of studying the behavior of the Apparent …

Stabilization/Solidification Of Organic Containing Wastes Using Organophilic Clay And Coal Fly Ash, Edith Lagoutte

Theses

The relative merits of eight different coal fly ashes for use in the stabilization/Solidification of a waste containing both heavy metals and pentachlorophenol were investigated. Also studied, was the possible use of either untreated or treated (with hexade-cyl ammonium bromide) clay to enhance the stabilization of the organic. The sample composition was : 62% foundry baghouse dust (or 60% if 2% clay as added to the sample), 4.5% cement, 14% coal fly ash, 19.5% water. Pentachlorophenol was chosen as represen¬tative of the organic contamination. All tests were performed after curing the samples at 22°C, 98% Rh for 28 days. The …

Trends Of Eom, B(A)P, Sulfates, And Nitrates In Air-Borne Particulate Matter In Eleven Proximate Locations In New Jersey During 1988, Sathish Pushpala

Theses

Air-borne particulate matter was collected at eleven proximate locations in New Jersey during the year 1988. Particulate matter was extracted in cyclohexane and acetone to separate non-polar and polar components. Particulate matter was also analyzed for B(a)P, Sulfates and Nitrates.

This report presents the inter-site and intra-site variation of concentrations of pollutants between summer and winter seasons. Levels of B(a)P varied from 0.12 to 0.03 ng/M³ between urban and rural sites. During winter, B(a)P concentrations were 5 times more than summer. Concentrations of Cyc which represent mostly primary pollutants, were found 3 times lower in rural sites. Ace fractions …

Preparation And Testing Of Novel Blocked Isocyanate Dental Adhesives Based Upon Hydroxyhexylmethacrylate, Yunwen Ye

Theses

A new kind of dental adhesive, O-Chlorophenol-TDI-HEMA-Pentaerythritol (TDI), was studied under long term conditions. The test was done in human third molar teeth which had been extracted 7 days to 6 months. Both citric acid and non citric acid pre-treatments were used on dentin surfaces. Based on Causton's[9] mineralizing solution pre-treatment method, we have used 3 kinds of mineralizing solutions, ITS, 0.5% CaCl2, NaF, as pre-treatment solutions. There were no significant differences between the citric acid and non citric acid pre-treatment. The ITS mineralizing solution pre-treatment caused a large increase in bond strength. The average bond strength of 1791 psi …

Adaptive Stack Filtering By Lms And Perceptron Learning, Yu-Chou Huang

Theses

Stack filters are a class of sliding?window nonlinear digital filters that possess the weak superposition property(threshold decomposition) and the ordering property known as the stacking property. They have been demonstrated to be robust in suppressing noise. Two methods are introduced in this thesis to adaptively configure a stack filter. One is by employing the Least Mean Square(LMS) algorithm and the other is based on Perceptron learning.

Experimental results are presented to demonstrate the effectiveness of our methods to noise suppression.

Estimating 3-D Motion And Structure Parameters Of A Rigid Planar Object By Establishing Landmark Correspondences, Herman Agustiawan

Theses

The application of a landmark based approach in recognizing 3-D rigid planar objects[3] along with two different motion and structure estimation algorithm [21][23] have been studied to perform motion and structure estimation tasks of moving objects. The recognition algorithm is based on a sphericity value derived from affine transformation that maps feature points in the object under observation from first to second view in the 2-D image space. The motion and structure estimation algorithm is based on a unique mapping given four or more feature point correspondences.

More than ten experiments have been done including small and large rigid motions. …

Improving Kindergarten Achievement Via Hands-On Teaching: A Developmental Approach., Henry O. Hollimon Jr.

Abraham S. Fischler College of Education ETD Archive

This report describes a program to improve the achievement of the kindergarten students at the primary school in Charles City County. The instructional program was structured and academic in nature. Developmental hands-on instructional procedures needed for kindergarten-age children was not used. School administrators encouraged the situation in order to have the children reading by the time the entered first grade. All of the kindergarten teachers were not endorsed in kindergarten or early childhood education, and no inservice teacher-training specific to the instructional needs of that grade had been provided by the school division. The results were students scoring below the …

Search Designs And Other Topic In Fractional Replication., Kashinath Chatterjee Dr.

Doctoral Theses

This thesis primarily deals with search designs (see Srivastava (1975)) of various types for general symmetric and asymmetric factorials. The thesis also considers some other types on fractional factorials. We have made use of Kronecker products and various other results from matrix theory.In the first four chapters, different types of search designs have been studied. Chapter 5A considers the construction of orthogonal main-effect plans for general factorial experiments under the presence of a linear time trend. Chapter 5B extends the calculus for factorial arrangements to a fractional factorial set-up and examines critically the proportional frequency plans from the point of …

Through Thick And Thin: Evolutionary Transitions Of Las Vegas Grandes And Its Pobladores, Anselmo F. Arellano

American Studies ETDs

Near the end of the Spanish Colonial Period in New Mexico, Hispano and mestizo citizens from the Santa Fe and San Miguel del Bado area cast their eyes on some longed-for fertile grazing lands called las vegas grandes en el Rio de las Gallinas. Due to constant prevailing forays by Indians during this epoch, initial settlement efforts failed, but in 1835 a new thrust from San Miguel del Bado led to the permanent settlement of one of the last community land grants conceded in New Mexico during the Mexican Period.

This dissertation concerns itself with the history and culture of …

A Study For A Lexicon Of Laguna Keresan, Hilaire Paul Valiquette

Anthropology ETDs

Laguna Keres is one of seven Keresan dialects spoken by the Pueblo peoples in New Mexico. The present study focuses on lexical categories in general, and on verb morphology and classification in particular. Language can be construed either as a system governed by universal rules, or as an idiosyncratic listing; the two constructions balance and define each other. In language description, these two approaches usually appear as "grammars" or "lexicons". For Laguna Keres, I argue that division into lexical categories and sub-categories must be based on semantics, morphology, syntax, and phonology.

After a sketch of Laguna Keres, I review previous …

Characterizing Fines To Predict Their Performance In A Sheet Of Paper, Rodney W. Tibboles

Paper Engineering Senior Theses

Many studies have been performed with the purpose of determining the effects of fines on paper properties. However, many of these studies fail to develop characterizations of the fines themselves before relating the presence of these fines to sheet properties. This study first developed complete characterizations of fines and then related the properties of the fines to properties of paper containing these fines.

Bleached kraft, unbleached kraft, and TMP pulps from a southern pine were used in this project. Characterization of the fines included determination of physical features of the fines, size distribution, water retention value (WRV), drainability, and compressibility. …

The Development Of Trust For Best Friend Versus Other Friend In Childhood And Adolescent Relationship, Eileen Molzen

Student Work

Trust as experienced in childhood and adolescent bestfriend and other friend dyads was examined with respect to age differences, sex differences, and differences inperspective taking. A sample of 109 students in grade levels 4 (9-10 years; N =27), 6 (11-12 years; N = 29), 8 (13-14years; N = 25), and 10 (15-16 years; N = 28), were selected to provide for a cross-section of school age youth. Age and gender differences for trust in regard to the dyadic relationships were investigated using a modified version of Sharabany's Intimacy Scale, and a modified version of the Prisoner's Dilemma Game; the latter …

An Ecological Description Of Three Black Bass Species In Two Northeastern Kentucky Muskellunge Streams, Albert F. Surmont Jr.

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Albert F. Surmont, Jr. on December 10, 1990.

Rough On A Tangent, Cynthia Wynne Wooley

English Language and Literature ETDs

Rough on a Tangent is a novel which charts the progress of Rita, a novice detective in Los Angeles, as she follows her first real investigation to Madrid and back. The case concerns her housemate, Kurt, who gets involved with a spiritual cult which is using a new form of biochemical warfare to gain power. I have used the detective story genre to explore Rita's journey of self discovery. These first four chapters comprise part one of my novel.

The Magmatic History Of An Aubrite Parent Asteroid: Evidence From Igneous Clasts And Trace Elements, Maya Monica Wheelock

Earth and Planetary Sciences ETDs

Norton County aubrite contains numerous igneous-textured clasts that survived severe brecciation. These clasts were studied in order to obtain information about the suite of original igneous lithologies that crystallized on an aubrite parent body. The majority of igneous clasts are pyroxenites (enstatite, with minor diopside, +/- forsterite) and orthopyroxenites (enstatite, +/- forsterite). Phase relations and textural evidence are consistent with formation from a nearly pure enstatite magma body or magma ocean, at (or near) the surface of the parent body.

A new sulfide-dominated lithology was identified in Norton County. The sulfide portion is dominated by coarse-grained oldhamite (CaS) containing rounded …

Peephole Optimization Of Assembly Language Using Regular Expression Pattern Matching., Bill Mahoney

Student Work

Producing compilers for high level computer languages is difficult. The early phases of the compiler, syntactical and lexical analysis, are well understood and have been automated. Code generation is more ad-hoc in both design and implementation. The code generators in use may be sufficiently complex that the output could benefit from additional optimization. This thesis describes current efforts . to produce peephole optimizers which perform optimizations on the compiler output. A case is presented for basing optimizations on human written rules. A peephole optimizer generator is presented which reads a rule language which includes regular expressions and produces an executable …

Myers-Briggs Personality Types In Chronic Pain Patients, Linda S. Mckee-Mcalpin

Student Work

This study uses the Myers-Briggs Type Indicator to examine the possibility that there are personality types that are more likely to cope maladaptively, and experience the syndrome of chronic pain, when they are faced with an injury or pain which results in unexpected life changes.

The Chronic Pain sample in this study scored significantly higher than a Normal sample in their preference for Introversion, Sensing and Judging and were significantly more likely to be the personality types ISFJ or ISTJ.

This study also examines the relationship between MMPI depression scores and Myers-Briggs Introversion scores and the results tend to confirm …

Golf Courses In Omaha: A Recreational Geography And Land Use Study, Michael H. Mcintyre

Student Work

The study inspected the provision of golf courses in Omaha along with surrounding patterns of land use development adjacent to each of the courses. National Recreation and Parks Association (NRPA) provided guidelines to assess the provision of golf to the city, which determined that Omaha was extensively overserved and overdeveloped. The NRPA does not indicate course type to assess the quantity of courses to adequately serve a community and therefore it was proposed that perhaps Omaha has not been overbuilt in the provison of golf to the community. It was also proposed that the golf course does not stand alone …

Job Satisfaction And Communication Satisfaction In Volunteer Organizations, Paula J. Hazelrigg

Student Work

The connection between job satisfaction and communication satisfaction has been explored in the profit sector (Downs-Hazen 1977, Thiry 1977, Nicholson 1980, Pincus 1984). In the profit sector researchers Goldhaber (1978)Owen, Page, Zimmerman (197 6) and Pincus (19 86) support the vital importance of a positive communication environment to organization effectiveness.

Individual Differences In Trust In Friendships Of Children And Adolescents With Their Best Versus Other Friend, M. Susan Flanagan Snyder

Student Work

This study was concerned with the investigation of gender and psychological types (Extravert-Introvert, Sensation-Intuition, Thinking-Feeling, and Judging- Perceiving) in the application of trust of friendships of children and adolescents in reference to their 'best' and another one friend. The psychological types were determined by the Murphy-Meisgeier Type Indicator for Children (grades 4, 6, and 8) and the Myers-Briggs Type Indicator form G (grade 10). The two measures of trust were a modified version of Sharabany Intimacy Scale (Sharabany, 1974), which consisted of a questionnaire of descriptive sentences about friendship, and a measure based on the Prisoner’s Dilemma, consisting of four …

Adolescent Suicide: A Study Of Prediction Variables, Julie M. Ohlund

Student Work

The purpose of the current study was to examine data to determine if "common demoninators" could define predictor variables for risk assessment of adolescent suicide. The aim of this project was to offer comparisons among hospitalized adolescent suicide "attempters" and "non-attempters", and outpatient adolescent suicide "attempters" and "non-attempters". The data was then compared with data from non-hospitalized adolescents nationally. The study was designed as a systematic investigation of archival data. The data was taken from hospital records including interview forms and psychological evaluations. The subject sample was randomly selected from a larger inpatient/outpatient population. Subjects ranged in age from 12 …

The Use Of Prereferral Interventions: The Student Assistance., Joye Louise Mcleod

Student Work

The national special education mandate, the Education for All Handicapped Children Act, also known as Public Law 94-142, was enacted by Congress in 1975. Since that time many politicians, education agencies, and taxpayers, as well as some educators, have become alarmed at what has been perceived as the overexpansion of special education services and their skyrocketing costs. Fiscal problems in education account in part for the growing concerns about the expansion of special education. Limited state and federal resources are available for funding special education. Taxpayer revolts, particularly regarding local property taxes, limit the taxation levies available to finance education.

Holocene Climatic Change In The Central United States Inferred From Paleoecological Data., Raymond P. Latimer

Student Work

The Holocene in the central U.S. is the period of time since the retreat of the last continental ice sheets. It has been a 10,000 year period of climate variability. In North America, Holocene climatic fluctuations have been detected in the paleoenvironmental record of the central United States. The most evident climactic fluctuation has been the mid-Holocene Climatic Optimum, or Altithermal. The Altithermal provided the warmest and driest post-glacial climatic conditions which lasted from ca. 8500-4000 years B.P.

The Search For Branchio-Oto-Renal Syndrome On Human Chromosomes 1 And 8., Kimberly Kay Comeau

Student Work

Branchio-oto-renal (BOR) syndrome is an autosomal dominant disorder in which affected individuals may have conductive, sensorineural or mixed hearing loss, preauricular pits, structural defects of the outer, middle or inner ear, fistulas and cysts of the second bronchial arc and renal anomalies ranging from mild hypoplasia to complete agenesis. There is wide variation in expression of the syndrome and not all symptoms are present in all carriers of the gene. Less frequent systems (e.g. lacrimal duct stenosis) have been described.

The Phytogeomorphology Of The Niobrara Region Near Meadville, Nebraska., Barbara J. Pollack Friskopp

Student Work

One of the most phytogeomorphologically unique areas of Nebraska occurs along the Niobrara River Valley north of the community of Ainsworth. Not only is this an area where the Rocky Mountain, Eastern Deciduous and Northern Boreal Forest converge, but it is also an area of relatively recent geomorphic activity. Landslides are known to have occurred here; there is evidence of very recent, active movement as well as older, stabilized landslides. The purpose of this study was to examine the relationship between plant communities and geomorphic history. Three 100 m long transects were surveyed in each of the five study areas, …

Dicotyledonous Rosettes Of Eastern Nebraska: Descriptions And Key., Phillip David Moore

Student Work

The purpose of this study is to provide descriptions of keys to the identification for the dicotyledonous rosettes of eastern Nebraska. Rosettes are defined as herbaceous, terrestrial, acaulescent cluster of leaves. Vegetative descriptions are provided for 113 species pf 56 genera. A key to the species, based on the descriptions, is provided for identification of the taxa. Field collections were made from October 1988 through July 1990, with most specimens collected from August through November 1989. Specimens were pressed and dried using commonly accepted herbarium techniques. Voucher specimens are deposited at the University of Nebraska at Omaha Herbarium (OMA). Rosettes …